SEALING DEVICE Russian patent published in 2009 - IPC B21B31/02 

FIELD: engineering industry.

SUBSTANCE: invention refers to sealing device used for the bearing of rolling mill rolls. Roll bearing sealing device consists of a trunnion with a sealing before which on the side of roll body there located is O-ring that is rigidly connected to annular extension piece of the bearing body, and sealing edge of which adjoins the end surface of roll with sealing contact; herewith, L-shaped, in cross section, annular profile is rigidly connected with its first flange to end surface of roll, sealing edge adjoins the areas of the first flange, the second flange envelopes L-shaped annular profile, annular sealing and annular extension piece zone with insignificant clearance, and seals relative to body of roll, annular extension piece has a waste groove on the outside and open outwards; at that, at least the area of the first flange being in contact with the sealing edge is strengthened for example by polishing by means of knurls, and/or is partially nitrated by plasma method, and/or is oxidised purposefully.

EFFECT: improving service life of sealing.

6 cl, 1 dwg